Attachment for coal-cutting machines.



l. JENKINS. ATTACHMENT FOR COAL CUTTING MACHINES. APPLICATIONF|LED1uNE20.19x3. RENEWED Nov. 2o. |915. L'YAUY.,

\\\ V A W l.

.m -mn I. JENKINS.

ATTACHMENT FON coAL CUTTING MACHINES. APPLICATION FILED JUNE 20| 1913-RENEWED NOV- 20| 1915. IAQQ?.

Patented Nov. 20, 191?.

3 SHEETS-fSHEET 2.

1. JENKINS. ATTACHMENT FOR COAL CUTTING MACHINES. APPLlCA'ION FILED JUNE20| 1913. RENEWED NOV. 20| |9l5.

Patented Nov. 20, 1917. l

3 SHEETS-SHEET 3.

LQQYAU?,

l @ad JONATHAN JENKIS, OF JENKINS, KENTUCKY, ASSIGNOR T0 'THE JEFFREYMANUFC TURIN@ COMPANY, 0F COLUMBUS, OHIO, A CORPORATION OF OHO.

ATTACHMENT FOR COAL-CUTTING MACHINES.

Leanne?,

Application filed June 20, 1913, Serial No. 774,885.

To all whom z't may concern:

B e it known that I, JONATHAN JENKINS, a cltizen of the United Sta-tes,residing at `Jenkins, in the county of Letcher and State of Kentucky,have invented new and useful Improvements in Attachments for Coal-Cutting Machines, of which the following is a specification.

The present invention relates to improvements in that type of miningmachines in which the coal cutting mechanism is supported on trackwheels, the machine being supported 0n the mine track both while it isbeing transported from point to point in the mine and while 4the cuttingmechanism engages the coal to form akerf. In a machine of this characterwhich is now in use, the cutting mechanism is mounted upon the wheelsupportedV base frame or truck so as to project horizontally beyond the-lines of the truck and so as to swing latervcutting' machine of thetype specified,

equipped with the improved attachment;

-F1g. 2 is a plan view;

Figs. 3 and 4 are2 respectively, a frag? mental view, partly 1n frontelevation and partlyl in central transverse section, and a fragmentalplan view, showing a modification. l l

These gures are diagrammatic to a certain extent in that theydiscloseonly the essential features of the invention, the sectioning inFig. 3 being for the pur ose of'A slllowing` the pivotal mounting of t ebedp ate. y

Referring more particularly to the drawing, 1 deslgnates, generally, thetruck of the machine, the operating mechanism, or machine proper, 3 thebed-plate whereon the operating mechanism is mounted, and 1 the cuttingmechanism. All of these instrumentalities are ofl conventionalvconstruc-l tion, and for that reason specific description` andillustration thereof are omitted.

Specication of Letters Patent. I Pang-mtg@ Nrw/o 2U), 1917,

Renewed Novemberw, 1915. Serial No. 62,639.

However, it may be stated that the bedplate 3 has an approximatelycentral pivotal connection 33 with the ioor or frame 5 of the truck, asshown in Figs. 2 and 3 which permits it to turn or swing in' ahorizontal plane in either direct-ion, and that the cutting mechanism 4is of the endless chain type and is driven in any desired manner fromthe operating mechanism 2, the latter including a suitable motor. rllhechain is indicated in Fig. 1, but is omitted from Fig. 2, and itoperates in the usual manner when driven, to form the horizontal kerfsin the breast of coal, the rear end of the arm 6 vwhich supports thechain being rigidly connected with the bed-plate, so as to turn or swingtherewith. In Fig. 2 the operating.

mechanism includes the parts whose positions are conventionallyindica-ted by the rectangles adjacent to the numeral 2, the. position atthe left being that occupied by such translating devices as the buildersees it to use, such as an armature and held-magnet of any suitablesort, andthe position at the right of said numeral 2 being thatoccu'pied by the principal parts of the power transmitter. And thedrawing is merely conventional in this respect, as numerous forms ofoperating mechanisms and motors, and numerous styles of connections' areWell understood. by mining machine builders. The truck is designed totravel along a suitable track 7, its propulsion being effected throughthe agency of the motor.

The machine may be braced, if desired, and held stationary duringworking by means of a pair of jacks 8 and9, both jacks being orconventional construction and being operated by the usual hand-wheels.lin the present instance, the lower .or side jack 8 has auniversal-joint connection 10 with the truck Hoor 5, while the upper,`or root jack 9 is arranged at the opposite side of the truck trom thejack 8, and rests at its lower end on the forked outer end l12 et aupporting bracket 13, this bracket constiice' ' ative position.

the corner plate and the end of the' frame are extended or elongated, asindicated by the numerals 18 and 19, the latter construction permittingthe cutting mechanism to swing through a greater arc. "The bracket,

'in its operative position, projects at right angles to the side 'of thetruck, as shown in full lines in Figs. 2, 3 and 4, but may be moved onentering or leaving the mine, into aposition in which it extends eitherdirectly in front of the truck, or rearwardly along the side'thereof, asindicated in dotted lines in Figs. `v2 and 4, the afore=men tioned parts18 andv 19 enabling the bracket to clear the adjacent truck-wheels. Tlieconnection 10 between the lower jack 8 andthe truck floor likewisepermits a swinging movement of that jack into and out of oper- To holdthe bracket 13 in operative position, there is preferably employed asecond pin or bolt 20 which is removably inserted through registeringopenings in the upper bracket member and the corner plate, (and, wherethe short plate 16 is used, an additional opening in the truck Hoor).

The afore-mentioned swinging `or turning V movement of the bed frame 3is effected4 by 'y means of the "following devices.

21 is a winding drum mounted on a shaft 22 which is driven throughsuitable connections ,by the operating mechanism 2. A rope or cable 23has one end secured to the winding'drum 21 and is arranged to pass overa guide pulley 24 the frame of which has a swiveled or caster-likemounting in a sleeve 29 carried by a bracket 30 on a base 28 whichcarries the operating mechanism and the cutting mechamsm.

The cable 23, after passing over the ide pulley 24, is adapted to beextended lterally and connected with the outer end of the bracket arm 13so that the latter may constitute an abutment to sustain the draft ofthe cable when the drum 21 is rotated, thereby causin the b'ed plate -3and the parts mounted t ereon to swing laterally as will readilybeunderstood. The cable 23 may be connected with the outer end of thebracket arm 13 in any( suitable manner but I- preferk to arrange a guidepulley 25 between the arins ofthe forked end 12 of the bracket -arm, theulley being mounted on an upright pin 11. he cable is then provided atits free end with an eye 26 adapted for detachable engagement with ahook 27 on the base 28. .By doubling the cable back in the mannerdescribed, it will be understood that the stress on the cable iscorrespondin ly lessened and for this reason I prefer t is form ofconstruction. 5

In operation the machine, with the bracket arm 13 swung forward orrearward according asthe construction used ils that shown in Figs. 1 and2, or that shown in Figs. 3

and 4), movesover the mine track to 4the end of the entry to be extendedor up to the room face to be cut, the track extending longitudinallytoward the said face. With the machine at the face, the first operationis the making of the entering or sumping cut. My present improvements donot relate to this sumping cut and it need only be stated in passingthat to ei'ect the sumping cut the bed plate 3 is swung to the rightuntil the forward end of the cutter frame 6 is at the l right rib.`Thereupon, the parts being now held yagainst swinging, the cable 23 iscarried forward to a point adjacent the coal face where it is made fastto a suitable anchor or jack, and then by the winding of the drum 21 themachine is fed forward bodily on the-track toward the face of the coalso that the cutting mechanism is thrust longitudinally into the vein. Itwill of course be understood that 'if the construction shownl in Figs. 1and 2 is 'being used, the bracket arm 13 must be swung rearward from theposition shown in dotted lines in Fig. 2 to permit the enterin cut to bemade.

When the sumping cut has been completed, the bracket arm 13 having beenmade fast in its operative position (shown in lfull lines in Figs. 2, 3and 4), the cable 23 is carried out around the guide pulley 25 andthence back to the machine and made fast to the hook 27. Then, the jacks8 and 9 having been set to secure the machine firmly in pothe cable cannow be disengaged from the bracket 13 and used in a wellknownmanner tofeed the machine bodily away from hefface thereby finishing the cuttingof the Heretofore it'yhas been customary in handling machinessuch ashereinbefore described to effect the lateral swinging of the cuttingmechanism by connecting the Ilraft cable to an anchor or jack made fastadj acent the left rib toward which the cutting proceeds. The setting ofsuch an anchor or Jack consumes considerable time and unless 1t is setvery securely, the machine operators are subjected to danger incident tothe anchor giving way; With my improved bracket construction, it will beseen that I provide an abutment for the feed cable which 'is quitesecure and which can be set in operative position quickly and easily.

meneer While, as has been stated, the machine may be equipped forbracing purposes with the pair of jacks, it is to be understood that ifit is made strong enough, the roof jack may be omitted, and the machineheld stationary during working solely by means of the side jack, and forthesame reason, the latter jack may be also omitted if the weight andstrength of the machine are sufficient. In either instance, theshiftingfof the cutting mechanism is effected through the agency of themotor and Windlass, the pivotally -mounted bracket being, of course,employed. As the construction just referred to isotherwise identicalwith that shown and described, additional illustration is obviouslyunnecessary.

I claim l. In a mining machine of the type specified, the combination,With a truck, a bedplate revolubly mounted thereon, and cuttingmechanism and operating mechanism for the same mounted on the bed-platefor movement therewith; of a bracket pivotally connected to said truckfor movement into position at right-angles thereto; means for fasteningsaid bracket in such position; a jack carried .by said" bracket forholding the truck stationary; and a 'Windlass having adriving'connection with said operating mechanism, the cable of saidWindlass being connected at opposite ends With the Windlass drum and thebed-plate and engaged intermediate its ends with said holding means,

to ei'ect the rotation of said bed-plate.

- 2. In a mining machine of the character set forth, thecombination of atruck frame, track Wheels supporting the same, an elongated cuttingmechanism carried by the truck frame and extending horizontallvtherefrom, said cutting mechanism being mounted to swing laterallyacross the front end of the truck, and means for edecting the saidlateral movement of the cutting mechanism comprising a Winding drummounted to move bodily With said mechanism, a bracket arm pivotallymounted on the truck frame, said bracket `arm being adapted to swingfrom an inoperative position parallel to the longitudinal lines of ,themachine to an operative position approximately at right angles to thelongitudinal lines of the machine, means for securing the bracket arm'in operative position, and-a cable secured' at one end to the windingdrum and adapted to extend to and be connected with the outer end of thebracket arm.

3. In a mining machine of the character setrforth, the combination of atruck'frame, track wheels supporting the same, an elongated cuttingmechanism carried by the truck frame and extending horizontallytherefrom, said cutting mechanism being -mounted to swing laterallyacross the front end of the truck, means for eiiecting the said lateralmovement of the cutting mechanism comprising a Winding drum mounted tomove bodily with the sald mechanism, a bracket arm mounted on the truckframe and arranged to extend laterally and upwardly therefrom, a jackdisposed upon the outer endof the bracket arm and adapted to engage theroof of a mine, and a cable secured at one end to the Winding drum andadapted to be connected With the outer end of the bracket arm.

In testimony whereof I have hereunto Set my hand in presence of twosubscribing Witnesses.

JONATHAN JENKINS.

Witnesses:

W. A. CAMPBELL, F. E. JOHNSON.

